NEW YORK, NY - FEBRUARY 08: Model Christie Brinkley prepares backstage at The Heart Truth's Red Dress Collection 2012 Fashion Show at Hammerstein Ballroom on February 8, 2012 in New York City. (Photo by Theo Wargo/Getty Images for Heart Truth)
Kourtney Kardashian is showing off her post-baby body. The 36-year-old mom-of-three just revealed her weight on Instagram, and now she's proudly showing the world her body. See how much Kardashian weighs in the post below!